WILSON.] GEOGRAPHY FALL OF STREAMS. 



Fall of Lake Foi'Tc, commending at divide west of Randit^s PeaJc. 



447 



To valley 



Thence to junction of south branch 



Thence to mouth of Godwin Creek 



Theuce to point where road strikes creek 



Distance. 



Miles. 

 2i 

 5-i 

 15 

 21 



Fall. 



Feet. 

 2,200 

 1,200 

 1,20Q 



Fall per 

 mile. 



Feet. 

 880 

 218 

 80 

 38.9 



Fall of Godwin Creek, commencing at divide hetween it and Uncompalrgre. 





Distance. 



Fall. 



Fall per 

 mile. 





Miles. 

 10 



Feet. 

 2,800 

 1,000 



Feel 



374 





100 







COMPARISONS OF ANEROIDS WITH THE MERCURIAL BAROMETER. 



The following table gives the comparisons of the aneroids with the 

 mercurial barometer at different altitudes, ranging from 5,000 to over 

 14,000 feet above sea-level. These comparisons were made very care- 

 fully, and as often as practicable, hoping thereby to have a good check 

 on any heights which were dependent on the aneroids; and at the same 

 time wishing to see if there was any regularity in the movements of the 

 aneroids. But there does not appear to be any regularity in the changes 

 ■which they undergo. Generally, in going up or down any considerable 

 height in a short time, the aneroids would not change fast enough; 

 therefore would make the difference between points too small, while at 

 the same time they always indicated too great an absolute height, always 

 reading less than the barometer. 



In the tables given below, the readings of the barometer are reduced 

 to 32° Fahrenheit. The aneroids are supposed to be compensated for 

 temperature. 



The corrections to be applied to the aneroids are placed in separate 

 columns, with the sign prefixed, which in this case is always plus, as the 

 aneroids constantly read lower than the barometer. 



The instruments used were Green's cistern barometer, and the small 

 watch-aneroids by the same maker. 



Location. 



Time. 



Date. 



a?. 



Is 



O -. CD 

 rn -' r^ 



'o 

 a 



00 o 



T 



s 



"a 

 o 



a 



U-l -4 



c 



05 O 



'S 



OS 



H 



2 



O 



m O 







a 

 = 2 



P 

 c 









 a 

 a 



DO 



§^ 







Camp 12 



3 p. m 



7 a. m 



2 p. m 



1p.m.... 

 i2. 45 p. m . 



6 p.m 



2p. ra 



10 a. m 



2 p. m 



7 a. m 



11.50 a. m. 



Julv 29,1874 

 July 30, 1874 

 July 30, 1874 

 July 31, 1874 

 Aug. 1,1874 

 Aug. 1,1874 

 Aug. 3, 1874 

 Aug. 4, 1874 

 Aug. 6,1874 

 Aug. 7,1874 

 Aug. 7,1874 



21.854 

 21.717 

 18. 633 

 19. 177 

 19.023 



20. 608 

 21. 275 



21. 7.52 

 18. 924 

 22.134 

 21. 610 



21.13 



"iaio 



18.60 

 18.40 

 19.82 

 20.48 

 21.00 

 18. 34 

 21.27 

 20.71 



21.10 



20.86 

 17.80 



"26.16 

 17.00 



+ .724 



'".'533' 

 .577 

 .623 



.788 

 .795 

 .7.52 

 .584 

 .864 

 .900 



+ .754 

 .857 

 .833 



+ .000 

 1.61T 



Camp 13 



Stations 



Station ."? 



1.633 



Station 5 







































Station 8 .... 









Camp 20 







Camp 22 





26. is 





1.460 



